121 516 831 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷⁷

TF target 2⁷⁷

Status	Date	User	Residue	Shift	Type	Base
Verified	2023-12-21	aas236_tpu	38038CFB6100C8A4	0	1	3

History

Date	User	Type	Result
2023-12-21	Chun sung soo	CERT	PRP Certification CERT proof power = 8 Proof certified good
2023-12-21	aas236_tpu	C-PRP	38038CFB6100C8A4 PRP proof power = 8 PRP: Verified Proof certified good
2022-06-24	TheJudger	NF	no factor from 2^76 to 2^77
2021-08-20	TheJudger	NF	no factor from 2^75 to 2^76
2021-08-20	TheJudger	NF	no factor from 2^74 to 2^75
2020-03-23	Niels_Mache_Nextcloud	NF	no factor from 2^73 to 2^74
2020-03-23	Niels_Mache_Nextcloud	NF	no factor from 2^72 to 2^73
2015-12-14	planetclown	NF	no factor from 2^71 to 2^72
2015-06-15	SMoffat	NF	no factor from 2^70 to 2^71
2013-12-16	GrunwalderGIMP	NF	no factor from 2^69 to 2^70
2013-12-16	GrunwalderGIMP	NF	no factor from 2^68 to 2^69
2013-12-16	GrunwalderGIMP	NF	no factor from 2^66 to 2^68
2012-08-15	Richard	NF	no factor from 2^65 to 2^66
2010-10-21	Charles A. Morris	NF	no factor from 2^64 to 2^65
2010-05-18	OS1	NF	no factor from 2^63 to 2^64